package com.jin.gulimall.cart.controller;

import com.jin.gulimall.cart.intercepter.CartInterceptor;
import com.jin.gulimall.cart.service.CartService;
import com.jin.gulimall.cart.vo.Cart;
import com.jin.gulimall.cart.vo.CartItem;
import com.jin.gulimall.cart.vo.UserInfoTo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import java.util.List;
import java.util.concurrent.ExecutionException;

@Controller
public class CartController {

    @Autowired
    CartService cartService;

    @GetMapping("/getCurrentCartItems")
    @ResponseBody
    public List<CartItem> getCurrentCartItems(){
        return cartService.getCurrentCartItems();
    }

    @GetMapping("/deleteItem")
    public String deleteItem(@RequestParam("skuId") Long skuId){
        cartService.deleteItem(skuId);
        return "redirect:http://cart.gulimall.com/cart.html";
    }

    @GetMapping("/changeCountItem")
    public String changeCountItem(@RequestParam("skuId") Long skuId,@RequestParam("num") Integer num){
        cartService.changeCountItem(skuId, num);
        return "redirect:http://cart.gulimall.com/cart.html";
    }

    @GetMapping("/checkItem")
    public String checkItem(@RequestParam("skuId") Long skuId,
                            @RequestParam("check") Integer check){
        cartService.checkItem(skuId, check);
        return "redirect:http://cart.gulimall.com/cart.html";
    }

    @GetMapping("/cart.html")
    public String cartListPage(Model model) throws ExecutionException, InterruptedException {
//        UserInfoTo userInfoTo = CartInterceptor.threadLocal.get();
//        System.out.println(userInfoTo);
        Cart cart=cartService.getCart();
        model.addAttribute("cart", cart);
        return "cartList";
    }

    /**
     * 添加商品到购物车
     * @return
     */
    @GetMapping("/addToCart")
    public String addToCart(@RequestParam("skuId") Long skuId,
                            @RequestParam("num") Integer num,
                            RedirectAttributes ra) throws ExecutionException, InterruptedException {
        cartService.addToCart(skuId, num);
        ra.addAttribute("skuId", skuId);
        return "redirect:http://cart.gulimall.com/addToCartSuccess.html";
    }

    /**
     * 上面添加购物车，采用redirect重定向的方式是为了防止重复提交数据，redirect实际上是两次转发，不会重复请求
     * @param skuId
     * @param model
     * @return
     */
    @GetMapping("/addToCartSuccess.html")
    public String addToCartSuccess(@RequestParam("skuId") Long skuId,Model model){
        CartItem cartItem=cartService.getCartItem(skuId);
        model.addAttribute("item", cartItem);
        return "success";
    }

}
